Stove-pipe drum



(No Model.)

M. P. FARNHAM. STOVB PIPE DRUM.

Payte'ntedJan. 19, 1892;

W/TNESSES.'

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UNITED STATES PATENT OEEIcE.

MOSES I). FARNI-IAM, OF GERMANTOVN, CALIFORNIA. t

STOVE-PIPE DRUM.

SPECIFICATION forming part of Letters Patent No. 467,370, dated January19, 1892.

Application filed February 4, 1891. Serial No. 380,167- (No model.)

To all whom, t may concern:

Be it known that 1, MOSES P. FARNHAM, of Germantown, in the county ofColusa and State of California, have invented a new and usefulImprovement in Stove-Pipe Drums, of which the following is a full,clear, and exact description.

This invention is mainly designed as an improvement upon the stove-pipedrum for which Letters Patent No. 194,590 were issued to me on August28, 1877, and in which an end-closed drum applicable to different kindsof stoves or furnaces and for various heating purposes is formed aroundand arranged to take the place of a joint or length of pipe leading tothe chimney, and in whichthere is combined, with the length of piperunning up through the drum and having upper and lower side aperturesand radial partitions, a damper in said length of pipe whereby the draftcirculation may either be established directly through thepipe orindirectly through the drum for the purpose of arresting sparks,confining or holding and regulating the heat in the stove or furnace,and for other uses or purposes.

The invention consists in the novel con` struction of such a drum inconnection with the stove or furnace pipe passing up through the sameand in sundry attachments appliedthereto,substantiallyashereinafterdescribed,

and more particularly pointed out in the claims, whereby numerousadvantages are obtained.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the iigures.

Figure I represents a broken partly sectionaltop view or plan of a drumembodying my invention applied to and around a stove or furnace pipe;Fig. 2, an under view of the same; Fig. 3, a vertical sectional viewthereof 5 Fig. 4t, a view in perspective I of the damper with certainattachments which is applied to thelength of pipe running through thedrum.

A is a length of the stove or furnace draftpipe; B, the end-closed drumarranged around the same and having any number (here shown as three) ofradial partitions C', C2, and CB, connecting the exterior of the pipe Awith the interior of the drum B, the one C extending from top to bottomof the drum, the next O2 extending from the bottom but stopping short ofthe top of the drum, and the third one C3 extending from the top butstopping short of the bottom of the drum. In the sides of the pipe A areupper and lower apertures ZJ b', the upper one b being arranged betweenthe partitions C and C3 and the lower aperture b being arranged betweenthe partitions C' and C2.

D is the rotatable damper arranged intermediately of the length of thepipe A for controlling or regulating the draft directly through saidpipe or indirectly through the drum, as required. Vhen said damper isturned square across the pipe A, the smoke and heated gases from thestove or furnace are made to pass up within the lower portion of thepipe A, thence through the lower aperture b to the flue f', formed bythe partitions C C2, over the partition C2, and down the flue f2, formedby the partition C2 and C3, under the latter partition, and thence upthe flue f3, formed by the partitions C3 and C', and out through theupper aperture b.

To clean the drum of collecting soot and ashes, especially when burningcertain coal or pitch-pine, lwithout taking down the drum from the stoveor furnace or disconnecting it from the smoke-pipe, I provide in thelower head of the drum exterior to the pipe A directly under thepartition C3, which stops short of the bottom of the drum, aclearancehole c', which serves to clear both tlues f2 f3, formed by thepartitions C C3 and O2 C3, and another clearance-hole c2, which servesto clear the flue f', formed by the partitions C C2. IVhere a great-ernumber of flues are used, there of course will be a correspondingincrease of clearance-holes. These clearancen holes are closed, when notrequired to be used, by any suitable lids or doors, which, however, arehere shown as turning ones d, riveted at their one end to the lower headof the drum and held closed by a spring or button e. The providing ofthese clearanceholes is almost indispensable when the drum is used as aspark-arrester in field-engines, and in others where it is not only usedas a spark-arrester, but as a device for holding down or retaining theheat in the stove or IOO furnace to save fuel or to establish specialdistribution of the heat.

To prevent the aperture b from being closed or obstructed by a lowerconnectingdraft-pipe telescoping with the pipe A, which, as the damperDis designed to fit tight, would cause the stove or furnace to smoke, asuitable stop is provided in connection with the pipe A to arrest thetelescoping pipe, so that it cannot be entered within the lower end ofthe pipe A to a greater height than will leave the aperture b fullyopen. This may be accomplished by lugs projecting internally within thepipe, or, which is the same thing, by a cross-wire g, passed through thepipe A below the aperture b.

The radial partition C2, which stopsshort of the top ofthe drum, hasfitted on or over it a saddle-like slide E for closing at willthe draftthroat or passage over said partition to any extent requiredf-as, forinstance, in very windy weather or when the body of fuel in d raft.

it and projecting up through the top head of the drum, said stern beingprovided with any suitable catch to hold .it atthe required ad j ustmentof said slide, and which is `here shown as a flexible strip t', attachedto the upper end of the stem h and made to bind or butt against the sideof the upper projecting end of the p'ipe A.

The damper D in the pipe A when made so large as when closedvto closethe pipe A, which is .desirable in some cases,butisapt to make the stoveor furnace smoke, is carried by a suitably-supported turning-rod k,which may be embedded in the damper and passed through a loop Z near theinner end of the rod, that maybe mainly square and be connected with theopposite marginal side of the damper by a clamp m, secured at its oneend by a bolt n to the damper and passing at its other end through aslot o in the damper. If desired, a simple set-screW--such as is usedfor analogous purposes-may be employed, instead of the clamp m, tosecure the turning-rod k of the damper. The damper D has a series ofholes s through it on opposite sides of the rod k, over which are fittedadjustable slides H, having corresponding holes s', and attached to thedamper by bolts u, passing through slots y in the damper. This providesfor the perforated damper having the holes through it more or less orfully closed,

as desired, according as the slides H are adjusted forthe purpose. InVthis way or by these means, when the damper is a close-fit` ting one,smoking of the stove or furnace may be avoided by permitting draftthrough the damper, and it is a well-known fact that when two opposingcurrents of air come together a draft is established.. Thus when thedamper is turned across the pipe and the holes through the damper areleft partly or Wholly open the heated gases passing through the apertureb are met by a portionof the heated gases passing through the holes inthe damper and the draft is quickened.

The ends of the radial partitions which stop short of either head ofthedrum are Apreferably bent over, as shown, for the partitionl C3 toprevent an obstructing angle being'formed and to establish curvesingline with the draft.

Havin g thus described my inventiomll claim as new and desire to securebyLetters Patentl. The combination,with a pipersectionhaving an upperand loweropening, of a ldrum surrounding the pipe=section andhavingthree vertical partitions, one extendingfroin top to bottom and.theother'twobeing of less-length than the drum, one terminating shortof the top and the other Short of the bottom, anda damper insaidpipe-section, substantially as described.

2. The end-closed stove or furnace pipe drum having upright partitionswithin it of differentheightsordepths,establishingliuesin between them,and having acentral througlidraftpipe providedwithupperandlowerdraftopenings and an intermediate damper, andthe lowerhead of the drum provided with a soot or ash clearance '.holeexterior'of one side of the through-draft pipe, provided with a lid ordoor and arranged to form a clearance-outlet for two adjacent fluesformed by the partitions Within the drum, substantially as described.

` 3. The combination,with the radially-partitioned closed-end drum Bandcentral draftpipe A, havingiupper and lower side apertures b b andintermediate damper D, and with the dru irl-partition C2, which stopsshort of the top of the drum, of the adjustable slide E, substantiallyas and for the purpose herein set forth.

. MOSES P. FARNHAM. lVitnesses:

` E. O. EVERETT,

E. W. FARNHAM.

IOO

